Read the note just above yours. Ours has been traced to fuel injectors going bad one at a time. They replaced one and then another would do it. Finally, we gave up and were going to go to a different brand. BMWNA contacted my dealer and made a great trade deal for a new one. We are awaiting the new one which has been offloaded in the US. Won't say much more and will be signing a paper, I'm sure, when we take delivery to shut me up. All I can say is that BMWNA went way above anything we expected and when we were about to jump ship, they again made us firm believers in their company.